Both MCCB and MCB are circuit breakers. MCCB stands for Molded Case Circuit Breaker, and MCB stands for Miniature Circuit Breaker. The chief difference between the two is their capacity. The MCB ranked under 100 amps with an intruding rating of below 18,000 amps, while the MCCB is suitable for commercial purposes.
MCCB comes with a flexible trip characteristic for the higher models. Generally, this type of circuit breaker would emanate 2,500 or as low as ten depending upon what is needed. MCB is mainly used for low energy requirements, such as small electronic circuits or home wiring. The MCCB is more appropriate for providing energy for high power equipment. Even though MCCB has a higher capacity than MCB, both are classified under low voltage circuit breakers.